I had a four-day demo of a Gyro last April. There is a long rambling review on the site somewhere, but suffice to say I really enjoyed it. However, I haven't bought one. In fact I bought a Five instead. I'm still not sure if that was the right call and if they do bring out an updated version of the Gyro this year I may well find it hard to resist. But here, in no particular order, are the reasons why I opted for the Five.
1. With the release of the 650B version, Bike Scene were knocking out 26" Five frames at silly prices. Since I already had 26" wheels etc I couldn't resist.
2. I struggled a bit on long steep (but not technical) climbs on the Gyro, particularly when I was tired. Obviously, a steep climb is always tough when you are tired, but I had to get off and push on a couple of sections that I'd usually ride and that frustrated me. I suspect this was down to the heavy wheels on the demo bike and lack of a really low bottom gear as much as anything.
3. My hands and arms suffered a bit more than I was used to. This may have been down to hitting things faster, but was probably more to do with the 2013 Evolution CTD fork, which I needed to run in trail mode all the time to stop it diving. I think that first iteration of the CTD fork wasn't the best and later versions are much better by all accounts.
4. The Five is more "playful" i.e. easier to lift the front wheel. I'm still not sure how important this is as it is largely offset by the fact that the bigger wheels smash over things more easily.
5. Although the Gyro is a better bike for all the riding I actually do, there was still a feeling that the Five might be a better bike to grow into. I've now changed my mind on this one as I realise that I'll never get close to challenging the capabilities of the Gyro, let alone the Five, but it was a factor at the time.